How much time did it take you to succeed?

Hey! I’ve seen many people say it took them 2+ years to finally succeed in making a profitable dropshopping store, whereas it took some less than a couple of months. Since I turned 16 last year and i graduate at 19 (in some EU countries we finish school later) - I have ca. 3 years left time to attempt to do something. Due to issues with my parents - I won’t communicate with them/get any monetary support from them when I graduate high school so I’ll need to somehow earn my money while I’m staying at college. Since I am studying in a marketing high school I am not a complete “newbie” when it comes to this topic. I’ve also done months and months of research but I still haven’t attempted to make a store. I don’t expect to get “rich overnight” or anything like that, but I don’t know whether it’s possible for me to start making an average wage monthly by my 3rd year drop-shopping. Do you guys think I’d be able to (theoretically if I learn to do it right)? Please excuse my mistakes if there are any.